package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.annotations.Mapper;
import org.apache.logging.log4j.util.Strings;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    /**
     * 新增菜品
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save (@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);

        return R.success("操作成功！");
    }

    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        //分页构造器
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(Strings.isNotEmpty(name),Dish::getName,name);

        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item)->{
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item,dishDto);//对象拷贝，将item中的数据拷贝到dishDto中

            Long categoryId = item.getCategoryId();//分类id

            //根据id查分类对象
            Category category = categoryService.getById(categoryId);
            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){
        DishDto dishDto = dishService.getByIdWithFlavor(id);

        return R.success(dishDto);
    }

    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update (@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        return R.success("操作成功！");
    }

    /**
     * 根据条件查询对应菜品数据
     * @param dish
     * @return
     */
//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish){
//        //查询条件
//        LambdaQueryWrapper<Dish> lambdaQueryWrapper = new LambdaQueryWrapper();
//        //根据id查询
//        lambdaQueryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
//        //查询是否启售
//        lambdaQueryWrapper.eq(Dish::getStatus,1);
//        List<Dish> list = dishService.list(lambdaQueryWrapper);
//
//        return R.success(list);
//    }

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        //查询条件
        LambdaQueryWrapper<Dish> lambdaQueryWrapper = new LambdaQueryWrapper();
        //根据id查询
        lambdaQueryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
        //查询是否启售
        lambdaQueryWrapper.eq(Dish::getStatus,1);
        List<Dish> list = dishService.list(lambdaQueryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item)->{
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item,dishDto);//对象拷贝，将item中的数据拷贝到dishDto中

            Long categoryId = item.getCategoryId();//分类id

            //根据id查分类对象
            Category category = categoryService.getById(categoryId);
            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(DishFlavor::getDishId,dishId);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(queryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());


        return R.success(dishDtoList);
    }
}
